﻿<!DOCTYPE html>
<html>
<head>
  <title>Resizing Rows and Columns in a Table Panel</title>
  <!-- Copyright 1998-2021 by Northwoods Software Corporation. -->
  <meta name="description" content="TypeScript: Using the RowResizingTool and ColumnResizingTool to allow the user to change the size of rows and columns in a Table Panel." />
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <script src="../assets/js/goSamples.js"></script> <!-- this is only for the GoJS Samples framework -->
</head>
<body>
  <div id="sample">
    <div id="myDiagramDiv" style="border: solid 1px black; width:100%; height:400px"></div>
    <p>
      This makes use of two tools, defined in their own files: <a href="ColumnResizingTool.ts">ColumnResizingTool.ts</a> and <a href="RowResizingTool.ts">RowResizingTool.ts</a>.
      Each tool adds an <a>Adornment</a> to a selected node that has a resize handle for each column or each row of a "Table" <a>Panel</a>.
      While resizing, you can press the Tab or the Delete key in order to stop the tool and restore the column or row to its natural size.
    </p>
    <p>
      This sample also adds TwoWay Bindings to the <a>RowColumnDefinition.width</a> property for the columns.
      Each column width is stored in the corresponding index of the node data's "widths" property, which must be an Array of numbers.
      The default value is NaN, allowing the column to occupy its natural width.
      Note that there are <b>no</b> Bindings for the row heights.
    </p>
    <p>The model data, automatically updated after each change or undo or redo:</p>
    <textarea id="mySavedModel" style="width:100%;height:300px"></textarea>
    <p>See also the <a href="../samples/addRemoveColumns.html">Add & Remove Rows & Columns</a> sample.</p>
  </div>

  <script type="module" id="code">
    import * as go from "../release/go-module.js";
    import { ColumnResizingTool } from './ColumnResizingTool.js';
    import { RowResizingTool } from './RowResizingTool.js';

    if (window.goSamples) goSamples(); // init for the samples -- you don't need to call this
    const $ = go.GraphObject.make; // for conciseness in defining templates

    const myDiagram = $(go.Diagram, 'myDiagramDiv', {
        validCycle: go.Diagram.CycleNotDirected,
        'undoManager.isEnabled': true
    });
    myDiagram.toolManager.mouseDownTools.add(new RowResizingTool());
    myDiagram.toolManager.mouseDownTools.add(new ColumnResizingTool());
    // This template is a Panel that is used to represent each item in a Panel.itemArray.
    // The Panel is data bound to the item object.
    const fieldTemplate = $(go.Panel, 'TableRow', // this Panel is a row in the containing Table
    new go.Binding('portId', 'name'), // this Panel is a "port"
    {
        background: 'transparent',
        fromSpot: go.Spot.Right,
        toSpot: go.Spot.Left,
        // allow drawing links from or to this port:
        fromLinkable: true, toLinkable: true
    }, $(go.Shape, {
        column: 0,
        width: 12, height: 12, margin: 4,
        // but disallow drawing links from or to this shape:
        fromLinkable: false, toLinkable: false
    }, new go.Binding('figure', 'figure'), new go.Binding('fill', 'color')), $(go.TextBlock, {
        column: 1,
        margin: new go.Margin(0, 2),
        stretch: go.GraphObject.Horizontal,
        font: 'bold 13px sans-serif',
        wrap: go.TextBlock.None,
        overflow: go.TextBlock.OverflowEllipsis,
        // and disallow drawing links from or to this text:
        fromLinkable: false, toLinkable: false
    }, new go.Binding('text', 'name')), $(go.TextBlock, {
        column: 2,
        margin: new go.Margin(0, 2),
        stretch: go.GraphObject.Horizontal,
        font: '13px sans-serif',
        maxLines: 3,
        overflow: go.TextBlock.OverflowEllipsis,
        editable: true
    }, new go.Binding('text', 'info').makeTwoWay()));
    // Return initialization for a RowColumnDefinition, specifying a particular column
    // and adding a Binding of RowColumnDefinition.width to the IDX'th number in the data.widths Array
    function makeWidthBinding(idx) {
        // These two conversion functions are closed over the IDX variable.
        // This source-to-target conversion extracts a number from the Array at the given index.
        function getColumnWidth(arr) {
            if (Array.isArray(arr) && idx < arr.length)
                return arr[idx];
            return NaN;
        }
        // This target-to-source conversion sets a number in the Array at the given index.
        function setColumnWidth(w, data) {
            let arr = data.widths;
            if (!arr)
                arr = [];
            if (idx >= arr.length) {
                for (let i = arr.length; i <= idx; i++)
                    arr[i] = NaN; // default to NaN
            }
            arr[idx] = w;
            return arr; // need to return the Array (as the value of data.widths)
        }
        return [
            { column: idx },
            new go.Binding('width', 'widths', getColumnWidth).makeTwoWay(setColumnWidth)
        ];
    }
    // This template represents a whole "record".
    myDiagram.nodeTemplate =
        $(go.Node, 'Auto', new go.Binding('location', 'loc', go.Point.parse).makeTwoWay(go.Point.stringify),
        // this rectangular shape surrounds the content of the node
        $(go.Shape, { fill: '#EEEEEE' }),
        // the content consists of a header and a list of items
        $(go.Panel, 'Vertical', { stretch: go.GraphObject.Horizontal, alignment: go.Spot.TopLeft },
        // this is the header for the whole node
        $(go.Panel, 'Auto', { stretch: go.GraphObject.Horizontal }, // as wide as the whole node
        $(go.Shape, { fill: '#1570A6', stroke: null }), $(go.TextBlock, {
            alignment: go.Spot.Center,
            margin: 3,
            stroke: 'white',
            textAlign: 'center',
            font: 'bold 12pt sans-serif'
        }, new go.Binding('text', 'key'))),
        // this Panel holds a Panel for each item object in the itemArray;
        // each item Panel is defined by the itemTemplate to be a TableRow in this Table
        $(go.Panel, 'Table', {
            name: 'TABLE', stretch: go.GraphObject.Horizontal,
            minSize: new go.Size(100, 10),
            defaultAlignment: go.Spot.Left,
            defaultStretch: go.GraphObject.Horizontal,
            defaultColumnSeparatorStroke: 'gray',
            defaultRowSeparatorStroke: 'gray',
            itemTemplate: fieldTemplate
        }, $(go.RowColumnDefinition, makeWidthBinding(0)), $(go.RowColumnDefinition, makeWidthBinding(1)), $(go.RowColumnDefinition, makeWidthBinding(2)), new go.Binding('itemArray', 'fields')) // end Table Panel of items
        ) // end Vertical Panel
        ); // end Node
    myDiagram.linkTemplate =
        $(go.Link, { relinkableFrom: true, relinkableTo: true, toShortLength: 4 }, // let user reconnect links
        $(go.Shape, { strokeWidth: 1.5 }), $(go.Shape, { toArrow: 'Standard', stroke: null }));
    myDiagram.model =
        $(go.GraphLinksModel, {
            linkFromPortIdProperty: 'fromPort',
            linkToPortIdProperty: 'toPort',
            // automatically update the model that is shown on this page
            'Changed': function (e) {
                if (e.isTransactionFinished)
                    showModel();
            },
            nodeDataArray: [
                {
                    key: 'Record1',
                    widths: [NaN, NaN, 60],
                    fields: [
                        { name: 'field1', info: 'first field', color: '#F7B84B', figure: 'Ellipse' },
                        { name: 'field2', info: 'the second one', color: '#F25022', figure: 'Ellipse' },
                        { name: 'fieldThree', info: '3rd', color: '#00BCF2' }
                    ],
                    loc: '0 0'
                },
                {
                    key: 'Record2',
                    widths: [NaN, NaN, NaN],
                    fields: [
                        { name: 'fieldA', info: '', color: '#FFB900', figure: 'Diamond' },
                        { name: 'fieldB', info: '', color: '#F25022', figure: 'Rectangle' },
                        { name: 'fieldC', info: '', color: '#7FBA00', figure: 'Diamond' },
                        { name: 'fieldD', info: 'fourth', color: '#00BCF2', figure: 'Rectangle' }
                    ],
                    loc: '250 0'
                }
            ],
            linkDataArray: [
                { from: 'Record1', fromPort: 'field1', to: 'Record2', toPort: 'fieldA' },
                { from: 'Record1', fromPort: 'field2', to: 'Record2', toPort: 'fieldD' },
                { from: 'Record1', fromPort: 'fieldThree', to: 'Record2', toPort: 'fieldB' }
            ]
        });
    showModel(); // show the diagram's initial model
    function showModel() {
        const elt = document.getElementById('mySavedModel');
        if (elt !== null)
            elt.textContent = myDiagram.model.toJson();
    }

    window.myDiagram = myDiagram; // Attach to the window for console debugging
  </script>
</body>
</html>